Projector Lamps

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exurbia

exurbia

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Joined 2002
bolloks.com
#1
Does anyone out there in video land know if i can get a

cheaper replacement lamp for a canon lv5500 video projector

canon and sanyo quote $au 980.00 . it is a 160 W HMI.

needless to say i am not happy about this huge price, so any help

will be greatly appreciated.
 
#3
exurbia said:
Does anyone out there in video land know if i can get a

cheaper replacement lamp for a canon lv5500 video projector

canon and sanyo quote $au 980.00 . it is a 160 W HMI.

needless to say i am not happy about this huge price, so any help

will be greatly appreciated.
Click to expand...


I wonder if it would be posible to make a lamp out of Super Bright leds?

http://www.luxeonstar.com/index.html

Don't laugh, These things put out about 500 lumens, i'm guessing 4 of them on a heatsink would run your projector for 11 years 24/7 before you needed to replace them and only draw about 20w.


or am i missing something??
 
#4
Actually, 18 of the White LEDS output 450 lumens. LEDs still aren't bright enough. It's just not practical. You'd need about 10 of the 18 LED assemblies to get a decent light output, and this obviously would not be practical to fit in a projector. Not to mention the cost isn't mentioned, and could be astronomical for the amount needed.
 
#5
projector lamp

thanks ehuwiko, i had no idea these could be remanufactured

i will look into this it is a good way to go.

by the way do you know what happens if a projector lamp fails

due to excess hrs ?. i have heard all sorts of horror stories

from retailers of course 🙄
 
#6
Ehuwiko said:
Actually, 18 of the White LEDS output 450 lumens. LEDs still aren't bright enough. It's just not practical. You'd need about 10 of the 18 LED assemblies to get a decent light output, and this obviously would not be practical to fit in a projector. Not to mention the cost isn't mentioned, and could be astronomical for the amount needed.
Click to expand...


18 leds! and not 1, good old bait and switch advertising, then again it was a pre-coffee morning post.


The original HID lamp is 1250 lumens of white light

http://www.projectorcentral.com/Canon-LV-5500.htm

I don't think You would need 10 X 450 lumens as 3 x 18 led assemblies would emit 1350 lumens? The biggest problem is the price ~ $US747...as you said "astronomical". Oh well maybe in a few year leds would be viable. I read somewhere they are doubling led brightness every 3 years, remember those old red led watches hehe.
 
#7
Ok consider this.

In Australia there is a place that sells Super Bright LED's for $AU40 for 10. They are rated at 15,000mcd or Mili Cadellas. To convert from lumens (roughly) it's

12.7 lumens = 1 candela = 1000 milicandelas

so 1250 Lumens would need 99 candelas or 99,000mcd's

If this is true and you can believe the rating on the leds then

99,000 / 15,000 ~ 7 leds

If that's the case the You could make one up with the 10 leds add the right power supply and a veroboard or pcb and experiment, wont cost more than $AU50 to try.

From web page:
LED-WHITE 5 mm SUPER-BRIGHT WHITE LED ~ 15 000 millicandela @ 20 mA, + or - 10 (20) degrees, VF @ 20 mA ~ 3.6 V, tolerance +/- 30%. Clear Package: Packet of 10 (Net ) $40. Packet of 5 (Net ) $25.

The web Page: http://www.allthings.com.au/Things/#660 nm 5 mm

Conversion page about leds:
http://www.superbrightleds.com/led_info.htm

These Leds have a very colimated light that spreads about 20degrees, would this not be perfect for a projector?

I have concluded luxeon star leds are way over priced, maybe that's why only NASA uses them?
 
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